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    <title>Document</title>
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<body>
    <div class="container">
        <div class="row">
            <div class="col-9" style="background-color: antiquewhite;">
                <div class="row">
                    <div class="col-12" style="background-color: red;height:100px;">nihao</div>
                </div>
                <div class="row">
                    <div class="col-6" style="background-color:aqua;">ww</div>
                    <div class="col-6" style="background-color:aqua;">ww</div>
                </div>
            </div>
            <div class=" col-3 " style="background-color: blue;height: 1000px ">
                hello
            </div>
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